"The jugular foramen is the cranial foramen located posterior to the carotid canal, formed by the petrous temporal bone and occipital bone where the sigmoid sinus and inferior petrosal sinus drain into the internal jugular vein and where cranial nerves IX–XI (glossopharyngeal, vagus, and accessory) exit 5. Ascending occipital and pharyngeal arteries are also located in this foramen 5."
"The jugular foramen is commonly described in two parts, separated by a fibrous septum or a bony septum called the jugular spine (intrajugular processes on the opposing surfaces of the temporal and occipital bones):"
Expected headings
"Divisions: 2-part classification"
"Pars nervosa"
"Pars vascularis"
"Divisions: 3-part classification"